%0 Journal Article %A H. GREENSPAN %A W. HAFNER %A M. RIBARIC %T On Varying Stepsize in Numerical Integration of First Order Differential Equations. %J Numerische Mathematik %D 1965 %P 286-291 %V 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1965__7_131664/ %F NUMA_1965__7_131664